/*
 * DBeaver - Universal Database Manager
 * Copyright (C) 2010-2020 DBeaver Corp and others
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jkiss.dbeaver.ui.controls;

import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.Viewer;

import java.util.Collection;

/**
 * ListContentProvider
 */
public class ListContentProvider implements IStructuredContentProvider {

    @Override
    public void dispose()
    {
    }

    @Override
    public void inputChanged(Viewer viewer, Object oldInput, Object newInput)
    {
    }

    @Override
    public Object[] getElements(Object inputElement)
    {
        if (inputElement == null) {
            return new Object[0];
        }
        if (inputElement instanceof Collection) {
            return ((Collection<?>)inputElement).toArray();
        } else if (inputElement.getClass().isArray()) {
            if (inputElement.getClass().getComponentType().isPrimitive()) {
                return null;
            } else {
                return (Object[])inputElement;
            }
        }
        return null;
    }

}
